ES2188455T3 - Transmision de resoluciones multiples con señales de portadoras. - Google Patents

Transmision de resoluciones multiples con señales de portadoras.

Info

Publication number
ES2188455T3
ES2188455T3 ES00114574T ES00114574T ES2188455T3 ES 2188455 T3 ES2188455 T3 ES 2188455T3 ES 00114574 T ES00114574 T ES 00114574T ES 00114574 T ES00114574 T ES 00114574T ES 2188455 T3 ES2188455 T3 ES 2188455T3
Authority
ES
Spain
Prior art keywords
signal
data
transmission
data streams
frequency band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES00114574T
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English (en)
Inventor
Mitsuaki Oshima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of ES2188455T3 publication Critical patent/ES2188455T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/256—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with trellis coding, e.g. with convolutional codes and TCM
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • H03M13/356—Unequal error protection [UEP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
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    • H04L27/04—Modulator circuits; Transmitter circuits
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    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/37—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability with arrangements for assigning different transmission priorities to video input data or to video coded data
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
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    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
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    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
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    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
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    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4347—Demultiplexing of several video streams
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    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440227—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by decomposing into layers, e.g. base layer and one or more enhancement layers
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    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64784—Data processing by the network
    • H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
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    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0036—Correction of carrier offset using a recovered symbol clock
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    • H04L2027/0053—Closed loops
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    • H04L2027/0067—Phase error detectors
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    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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    • H—ELECTRICITY
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Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Security & Cryptography (AREA)
  • Television Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Structure Of Transmissions (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Error Detection And Correction (AREA)
  • Transmitters (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Toys (AREA)
  • Dc Digital Transmission (AREA)
  • Pinball Game Machines (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Amplitude Modulation (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un aparato de transmisión de señal (1) incluyendo: - un modulador (4) para asignar una señal de entrada para producir una señal modulada, - medios de Transformada de Fourier Rápida inversa (IFFT) (40) para convertir la señal modulada en una señal convertida IFFT que tiene una parte de símbolo efectiva (796) y un intervalo de protección (797), según Multiplexión por División de Frecuencia Ortogonal, y - un transmisor (5) para transmitir la señal convertida IFFT, conteniendo dicha señal de entrada un primer flujo de datos, incluyendo g valores de configuraciones de bits, y un segundo flujo de datos, donde g es un número entero, y teniendo la señal modulada símbolos, cada uno de los cuales representa uno de m puntos de señal en un diagrama de espacio vectorial, donde m es un número entero, seleccionándose dicho intervalo de protección de manera que tenga un período de tiempo predeterminado, incluyendo además dicho modulador medios (61) para dividir dichos m puntos de señal en g grupos de puntos de señal, asignar los g valores del primer flujo de datos a los g grupos de puntos de señal respectivamente, asignar datos del segundo flujo de datos a puntos de señal de cada uno de los g grupos de puntos de señal, y seleccionar los puntos de señal en el diagrama de espacio vectorial según dicha señal de entrada, de manera que: dichos m puntos de señal se puedan distinguir uno de otro en el diagrama de espacio vectorial por medio de un primer conjunto de umbrales que divide el diagrama de espacio vectorial en m regiones, y los g grupos de puntos de señal se pueden distinguir uno de otro en el diagrama de espacio vectorial por medio de un segundo conjunto de umbrales que divide el diagrama de espacio vectorial más bastamente que el primer conjunto de umbrales en g regiones, se asignan puntos de señal en cada uno de dichos grupos de puntos de señal en el diagrama de espacio vectorial a intervalos iguales a lo largo de los ejes I y Q del diagrama de espacio vectorial, una distancia en eldiagrama de espacio vectorial entre cualesquiera dos puntos de señal más próximos de cualesquiera dos grupos de puntos de señal adyacentes es 25 x n, donde n es un valor de desplazamiento que es más de 1, y 25 es la distancia en el diagrama de espacio vectorial entre los dos puntos de señal más próximos de cualesquiera dos grupos de puntos de señal adyacentes cuando los m puntos de señal se asignan en el diagrama de espacio vectorial a intervalos iguales a lo largo de los ejes I y Q del diagrama de espacio vectorial, e incluyendo además dicho aparato de transmisión de señal (1) medios para transmitir datos para demodulación, incluyendo dichos datos para demodulación el valor de m.
ES00114574T 1992-09-25 1993-09-24 Transmision de resoluciones multiples con señales de portadoras. Expired - Lifetime ES2188455T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP25607092 1992-09-25
JP6646193 1993-03-25
JP13298493 1993-05-10

Publications (1)

Publication Number Publication Date
ES2188455T3 true ES2188455T3 (es) 2003-07-01

Family

ID=27299134

Family Applications (12)

Application Number Title Priority Date Filing Date
ES00114576T Expired - Lifetime ES2188457T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES04009384T Expired - Lifetime ES2316893T3 (es) 1992-09-25 1993-09-24 Transmision multiportadora con parte de simbolo variable e intervalo protector.
ES02017963T Expired - Lifetime ES2258580T3 (es) 1992-09-25 1993-09-24 Transmision jerarquica con señales multiportadoras y codigo de correccion de errores.
ES04009385T Expired - Lifetime ES2316894T3 (es) 1992-09-25 1993-09-24 Transmision multiportadora con parte de simbolo variable e intervalo protector.
ES00114574T Expired - Lifetime ES2188455T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples con señales de portadoras.
ES08163506T Expired - Lifetime ES2340554T3 (es) 1992-09-25 1993-09-24 Transmision multiportadora con parte de simbolo variable e intervalo de proteccion.
ES00114575T Expired - Lifetime ES2188456T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114573T Expired - Lifetime ES2188454T3 (es) 1992-09-25 1993-09-24 Sistema de transmision de resoluciones multiples.
ES00114577T Expired - Lifetime ES2188458T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114572T Expired - Lifetime ES2188453T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114578T Expired - Lifetime ES2190923T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
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ES04009384T Expired - Lifetime ES2316893T3 (es) 1992-09-25 1993-09-24 Transmision multiportadora con parte de simbolo variable e intervalo protector.
ES02017963T Expired - Lifetime ES2258580T3 (es) 1992-09-25 1993-09-24 Transmision jerarquica con señales multiportadoras y codigo de correccion de errores.
ES04009385T Expired - Lifetime ES2316894T3 (es) 1992-09-25 1993-09-24 Transmision multiportadora con parte de simbolo variable e intervalo protector.

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ES00114575T Expired - Lifetime ES2188456T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114573T Expired - Lifetime ES2188454T3 (es) 1992-09-25 1993-09-24 Sistema de transmision de resoluciones multiples.
ES00114577T Expired - Lifetime ES2188458T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114572T Expired - Lifetime ES2188453T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114578T Expired - Lifetime ES2190923T3 (es) 1992-09-25 1993-09-24 Transmision de resoluciones multiples, en particular para sistemas de portadoras multiples.
ES00114579T Expired - Lifetime ES2188459T3 (es) 1992-09-25 1993-09-24 Sistema de transmision de resoluciones multiples.

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EP1257104A2 (en) 2002-11-13
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